3D Pong is is a very small and fast ping-pong or handball game for one or two
players. It uses simple 3D vector graphics in Xlib. Multiple views are
possible, and red/blue separation is available for users with 3D movie glasses.

ADJE WebMail is a set of Perl CGI scripts which provide a Web interface to
existing email accounts on any POP3-compliant email server. The software
provides a complete interface, including encoding/decoding attachments, email
and URL markup in received emails, and an address book for each user.

AVInfo is a utility for displaying AVI, MPEG (1 and 2), OGM, MKV, and IFO (DVD) information. It returns the length of a clip, FPS, resolution, codec, audio and video bit rate, number of key frames, sound parameters, the number and type of streams, and the language for audio/subtitles. It then generates a file list with statistics (HTML, plain text, or CSV).

AVRprog can be used to burn the image files
created by the assembler or compiler into the
target MCU using some programming hardware. A
graphical frontend is available. It is also
possible to use a programmer connected to a
different machine using an IP network connection.

Absolut Engine is a PHP/MySQL framework built on the basis of a former news publishing system. It features 3 layer access, article posting, editing, and deleting. Included are a basic image and file manager as well as a related articles manager. Rich text editing is provided via a built-in WYSIWYG editor that produces XHTML 1.0 Strict
compliant code. It is easy to extend via the module functionality. It is fully configurable and easy-to-use. Modules include discussions, surveys, RSS feed export and import, search engine optimization, a messaging system, weather reports, and Google Maps.

Access Point Utilities for Unix is a set of utilities that configure
and monitor a Wireless Access Point under Unix. It is known to compile
(with GCC and the IBM C compiler) and run under Linux, FreeBSD,
OpenBSD, MacOS X, AIX, and QNX.

The Account Services Manager allows Web hosting
companies to easily automate the time consuming
tasks of managing mail, FTP accounts, and more by
giving the power to individual clients via a
Web-based interface.

The Advanced Bash Scripting Guide is both a reference and a tutorial on shell scripting. This comprehensive book, the equivalent of 1,000+ print pages, covers almost every aspect of shell scripting. It contains 382 profusely commented illustrative examples, a number of tables, and a cross-linked index/glossary. Not just a shell scripting tutorial, this book also provides an introduction to basic programming techniques, such as sorting and recursion. Included scripts are the Game of Life, a Perquackey variant, a Morse code trainer, and an implementation of the Gronsfeld Cipher. This book is suited for both individual study and classroom use. It covers Bash, up to and including version 4.2.
Note that users of miniaturized single-board computers
running Linux, such as the Raspberry Pi and the Beagle
Bone, would find this Guide useful for learning and running Bash scripts to explore and expand the capabilities of these small, but powerful machines.

Alkaline is a full-featured standalone search and index server. The spider is a fully remote indexing daemon which includes support for all standards like robots.txt and "skip" meta tags, and allows multiple distinct configurations and search groups (searching many different sites from your server), including complex regexp indexing paths, authentification, filters for various document formats, XML-based online management and statistics, mrtg-compatible perf numbers, and more.